source: extras/do_copy_files@ 8bcaf0d5

#!/bin/bash

set -e

: <<inline_doc
    desc:       Copy files from one dir to another dir using tar
    usage:      do_copy_files $PRUNEPATH $ROOT_DIR $DEST_DIR
    input vars: $1 list of dirs that must be skipped by tar
                $2 the root dir of the files that will be copied
                $3 the dir where the copied files will be placed
    externals:  --
    modifies:   --
    returns:    --
    on error:
    on success:
inline_doc

TMP_FILE=/tmp/prunelist

echo -en "\nCopying system files to $3 ..."

# Create a file that we can pass to tar as an "exclude list".
# There might be an easier way to achieve tar exclusions? Strip
# the leading /.
for F in $1 ; do
  echo .${F} >> $TMP_FILE
done

mkdir -p $3
cd $2
tar -X $TMP_FILE -cf - . | tar -C $3 -xf -

# Clear out the temporary file
rm -f ${TMP_FILE}

echo "done."